I just stumbled across this while trying to learn a bit more about using the command line, and thought others might appreciate it. It comes in a printable format so you can stick it up on your wall :)
curl cheat.sh/command is more useful because it just spits out common examples. man is only useful if you need complete documentation or need to build a complex oneliner.
I never remember hot to extract tar files. Would you dive into the documentation for that or look up a cheatsheet?